Alignment of the 0.3-kb KpnI-AatII fragment of A8 [accession no. D88386] and 57 [accession no. X02794]. Asterisks represent the sequence identity. PolyA: polyadenylation signal; PBS: primer binding site; 5’ss: 5’ splice site; glyco-Gag start; the start codon of glycosylated-Gag protein. Nucleotides that differ between A8 and 57 within the 0.3-kb fragment are numbered.